Three-phase electric heating tube wiring, electric heating tube is used for heating elements in household appliances and industrial equipment, the application of electric heating tube provides us with great convenience and safety. The heating speed of the electric heating tube is fast, the temperature is controllable, and the safety factor and temperature monitoring are more reliable. So for users who don’t know the electric heating tube, the problem that has always plagued them is how to connect the electric heating tube. The following editor will explain the wiring method of the three-phase electric heating tube.
Two connection methods of three-phase electric heating tube:
The first type: the same as the connection method of the motor, three tubes and six binding posts, first string together one end of the three tubes, which is the 2. end, and then connect each of the three live wires to an electric heating tube, which is 1. . End, it's OK.
The second type: the electric heating tubes are W, U, V, 1. as the head and 2. as the end, connect them according to the connection method on the picture, and then connect the three live wires to 1. and it is OK.
3-phase 4-wire is composed of 3 phase wires, that is, 3 live wires and a neutral wire. Just connect a live wire and a neutral wire.
Three-phase alternating current is a form of electric energy transmission, referred to as three-phase electricity for short. A three-phase AC power supply is a power supply composed of three AC electric potentials with the same frequency, the same amplitude, and the phase difference by 120°. Three-phase alternating current has many uses. Most of the alternating current equipment in the industry, such as motors, use three-phase alternating current, which is often referred to as the three-phase four-wire system.
In daily life, single-phase power is often used, also known as lighting power. When lighting electricity is used for power supply, one of the three-phase electricity is used to supply power to the electrical equipment, such as household appliances, and the other line is the fourth line of the three-phase four-wire, which is the neutral line. The neutral line is drawn from the neutral point of the three-phase electricity.
Let me tell you about the wiring method of 220v electric heating tube:
1. The load of the three-phase power supply should be balanced as much as possible, so the most preferred wiring method for connecting 12 220V heating tubes to the three-phase 380V power supply is a star connection of four as a group to ensure that the phase voltage is caused when individual heating tubes are damaged. If abnormal, the neutral point should be connected to zero.
2. Three identical electric heating tubes are required, connected in a star shape. That is, one connector of three heating wires is connected in parallel, no N wire is required, and the other three connectors are connected to UVW.
3. There is another method that is not very safe (it is not recommended to do only to discuss how to change 380V to 220V) is to connect a ground wire, and you can get 220 when you take a phase wire and connect the electrical appliance between the phase wire and the ground wire. Power supply. Of course, this is not very safe. If the ground wire is pulled out, it will become a hot wire.